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From: Paul Mackerras <paulus@samba.org>
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Date: Fri, 13 Jul 2001 11:25:10 +1000 (EST)
To: Zehetbauer Thomas <TZ@link.topcall.co.at>
Cc: "'linux-kernel@vger.kernel.org'" <linux-kernel@vger.kernel.org>
Subject: Re: Cannot access PCI device
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Zehetbauer Thomas writes:

> Hi! I am trying to access a custom PCI device on a Walnut Rev. D system
> running Hard Hat Linux Rev. 1.2 with Montavista kernel snapshot
> 01.04.12. The following code is beeing executed in the probe function of
> a kernel module and works well on Linux 2.4.2/Intel but returns useless
> values on PowerPC.

What kernel version is this?  We have fixed a few bugs in the PCI code
on PPC lately.

> ### begin ppc result ###
> Found PCI device 10ee:4030 (Xilinx, Inc.)
> pci_resource_start=10000000
> pci_resource_end=0
> PCI_BASE_ADDRESS_0=ffff0000

This looks bogus, it looks like the firmware hasn't assigned an
address to this device.  Current PPC kernels should assign a
reasonable address in this case - this is something that has been
fixed since 2.4.2 came out.

Paul.
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